13 reviews
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Grey Marle
Thermal underwear to keep you toasty during the depths of winter. Layer under your Ice Queen or She Shell and discover the unrivalled properties of our unique InfraRed™ fabric against your skin.
  • Unique InfraRed™ stretch polyester fabric blends the thermal might of polyester with a magic FarRed™ mineral print to reduce heat loss and increase circulation. Toasty.
  • 'Snug-as-a-bug' fit keeps the fabric against your skin to wick sweat away.
  • Full flat seaming and offset side seams for next-to-skin comfort.
  • Designed & made by us in Aotearoa | New Zealand.

  Weight: 170 gm

A thin, form-fitting stretch polyester base layer that enhances the thermal performance of any riding top. Brushed polyester fabric dries super fast while magic is performed by the FarRed™ mineral print against your skin - reducing 'far infrared' heat loss for increased circulation and comfort. 
  • Composition: 84% polyester; 16% lycra

+More than Kiwi Made
Ground Effect clothing is crafted right here in New Zealand. Has been ever since we started back in 1994. Manufacturing locally works for us. We operate a quick-response system - holding minimal stock of any one item, but churning out a few more quick-smart when the pile gets low. The upshot is that we are seldom caught with our shelves empty, so orders get despatched the same day you place them.

  • All Ground Effect clothing enjoys a warm 40ºC machine wash. Try to avoid cold-water detergents and those with bleach, 'oxygen whitener' or fabric softener.
    • The cold-water varieties have little enzymes that are super-charged to brave the cold but can damage technical fabrics and cause skin irritation. 
    • Bleach rots natural fibres like merino, strips the dye, attacks laminates of waterproof fabrics and can also cause skin irritation.
    • Sodium Percarbonate (the main ingredient in oxygen whitener) can make colours run.
    • Fabric softener and stuff containing it like wool wash destroys the water repellent finish on waterproof and water resistant fabrics, and can cause colours to run. 
  • As a rule of thumb, a product that is easy on the planet is also easy on your body. Select a mild plant-based soap like EcostoreEarthwise or Aware.
  • Hand washing is sometimes the only option on tour, but a washing machine rinses more thoroughly and is preferable if you have the choice.
  • Most Ground Effect gear dries super-fast so hanging on the line or drooping over the bedpost is generally the best option. High heat can damage some fabrics so if you do take your threads for a spin, set the device on 'medium' or 'warm' rather than hot. A lap in the dryer is recommended for your rain jacket, after it has dried on the line, as it helps recharge its water repellent finish. 
+ Shipping
  • Items are generally packed and sent the same day your order is received.
  • Costs $7 by overnight courier within New Zealand.
  • NZ$7 by tracked airmail to Australia.
  • Around NZ$15-25 by tracked airmail to destinations elsewhere in the world - calculated in our shipping cart as you check out. 
    • More shipping and tax details in our FAQ.
    Customer Reviews
    5.0 Based on 13 reviews
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    Filter Reviews:
      Ron J.
      New Zealand

      Loved the comfort and warmth, so much so I purchased an extra one. Ground Effect clothing is the best.

      Faye O.
      New Zealand New Zealand

      Perfect base layer, would recommend.

      Carli R.
      New Zealand New Zealand

      Nice feeling top, I just wish all your women’s gear was longer in the back as I am tall but not too wide thankfully. Men’s is usually not the right shape but at times I need to go there for the length. Not sure yet how this performs day after day…it does seem to get soaked through and not dry by the morning- hanging over the hut fire overnight…which is what I thought it would do. So mixed review from me! Thanks, Carli

      Phillip G.
      Australia Australia
      It's warm and comfy apparently

      The article was bought for an active (adult) daughter. The report is, "It's warm, comfortable, doesn't irritate the skin and doesn't sweat. It has been worn and washed often, with no sign of losing its shape or feel." Based on her report, I think the article is great value. (and btw, the items I received in the same order are also great value: Shoe Covers - warm, easy to put on and take off, lightweight and don't snag on toe clips and pedals. Foot Soldiers Socks - warm, fit well, very comfortable and frequent washing hasn't altered anything)

      Sally L.
      Australia Australia
      Lava thermal top

      Light weight, but great layering, really helps with keeping warm cycling or just as a long sleeve top for running. Great buy